Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 40000X68 found under Nut Self Locking Ba by Darling Special Products Inc. The National Stock Number assigned to this part is 5310012632552, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 40000X68.